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Redruth (Cornwall, England) DAB transmitter

sa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps50.209,-5.239 or 50°12'34"N 5°14'20"W


Are there any planned engineering works or unexpected transmitter faults on the Redruth (Cornwall, England) mast?

No problems on any service. BBC


UK Free TV shows the coverage area for a radio transmitter as a coloured overlay (orange for FM, other colours for DAB) on the grey map. We have computed the coverage by combining the terrain with the official radiation pattern. A single click will select the transmitter to view the coverage for a single site, and a double click goes to a page showing full details. Click on the buttons in the right-hand corner of the map to choose from different frequencies (or multiplexes for DAB).

 

Local transmitter maps

Redruth DAB

Comments
Friday, 14 June 2013
P
phil
8:01 PM

signal was non existent again today so i tried a retune, seemed to work.
did the same in the car, vast improvement but signal is still patchy around carnmenellis and penryn university where it was ok before.

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phil's 4 posts GB
Monday, 17 June 2013
P
Phil
10:34 AM

Signal here is again patchy. Goes from strong to nothing quickly. Signal errors on the radio constantly bounce from 35 to 70 plus

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Phil's 1 post GB
R
Rachel
10:29 PM

I've been having trouble with the dab radio in my car these past 3 weeks or so. I travel to work from Camborne to Truro, I listen to capitol fm (the London transmission on dab) and I never used to have any problems, but now the signal keeps cutting out a lot sometimes losing signal altogether. It seems to be worse in warm sunny weather! Is there a problem in this area? Has the latest 4g mobile phone service effected dab signal? Is there anything I can do about this?
Thanks

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Rachel's 2 posts GB
Tuesday, 18 June 2013
S
Simon Van Hear
11:44 AM

I've just reported this to the BBC. Initially I contacted DigitalUK as directed but they were pretty useless and directed me back to the BBC!
BBC said it is affecting TR2 to TR12 postcodes and they are still looking at the issue.
I'm pretty sure it coincided with the Retune on the 5th June.
Thanks

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Simon Van Hear's 5 posts SE
Thursday, 20 June 2013
C
Clive henderson
9:43 PM

After many years of excellent DAB reception in Mylor Bridge my reception became very sporadic about 3 weeks ago. I am relieved it's not just me and grateful to Simon for chasing up the problem. Let's hope it is resolved soon

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Clive henderson's 1 post GB
Friday, 21 June 2013
J
johng
10:04 AM
Falmouth

johng: I am keeping a diary for the next week for the man at the BBC; if anyone else wants to give me a %age reception on DAB at 7 am, midday, 4 pm and 8pm, I will pass it on. I score anything below 50% as unlistenable, 90% is occasional breakup. just post it here next Thursday evening with postcode.

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johng's 6 posts GB
Tuesday, 25 June 2013
P
Pete Marshall
9:12 AM
Falmouth

Just to reinforce the trend, I'm in Falmouth and as Clive says am finally relieved to discover that others are in the same boat.
If I can find out how to get a %age reception on my radio, I'll collect some info for johng, although I can't promise the 7 am slot.

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Pete Marshall's 5 posts GB
Briantist
sentiment_very_satisfiedOwner

9:21 AM

It's worth noting that for digital transmission, the way of measuring the quality of the signal is the "bit error rate".

A BER of 1:10,000 (for example) means that one unrecoverable error happened in every 10,000.

The actual signal strength doesn't matter, and is a bit of a misnomer.

If you are seeing a "percentage" bar for signal quality on equipment X, it won't relate to that on equipment Y.

The COFDM system (which DAB uses) pushes multiple copies of the signal over different frequencies (digital subcarriers) - everything on DAB is transmitted twice, in effect.

So, it's only when the receiver is unable to recover a bit from the multiple transmissions is a "bit error" detected.

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Briantist's 38,844 posts GB
P
Pete Marshall
9:36 AM
Falmouth

Just did a total retune and can confirm that it seems to be only the BBC stations that are affected. Other stations show just as weak a signal, but do not break up.

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Pete Marshall's 5 posts GB
Briantist
sentiment_very_satisfiedOwner

1:01 PM

Pete Marshall: It's worth noting, as per the table above, that the BBC stations are all carried together in a single transmission, the "BBC National DAB".

If one of these station is affected, they all will be.

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Briantist's 38,844 posts GB
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